Computer evaluations are meant to be objective, up to the limits of the engines. A blunder is still a blunder even if your opponent doesn't take advantage of it, misses the correct continuation a few moves later, of has their own blunder later.
There is room in some positions where the human ideas are easier to calculate than the engine's better line, but a lot of the time that is not going to be the case.
What I generally miss is that chess engines often go for short-term wins and don't take into consideration what the player eventually built up towards. Positional play as a human is different from computer play. Yes, computers play perfectly, but humans also anticipate moves that others may forget, which might result from time pressure or oversight. This is especially true when setting up complex forks - the engines don't understand that humans make preparatory moves for these tactics. When i played a NM for example i learned about a null move in chess, never had seen that before. Computers probably won't do that.
And well if your a 1200 or so, chess is different as compared to a 1800 or 800.
As a human you think about your opponents moves and what he might be aware off.
Some suggestion :
- Games with opening sacrifices are common by humans, but chess engines always count it as a tactical error, while in reality it can brake opening ideas, and surprice.